The Transport Accident Investigation Commission has opened an inquiry into the derailment of a KiwiRail coal train on the Midland Line near Otira.
Coal train 834 was travelling towards Christchurch when at least one wagon reportedly derailed at around 10pm on November 3.
The train stopped inside the Otira Tunnel. No injuries were reported, but the train and rail infrastructure are understood to have sustained extensive damage.
TAIC chief investigator of accidents Louise Cook says a team has been appointed to gather evidence from the scene.
“Our investigators would typically spend two to three days on site,” Cook says.
“Their first priority is to gather evidence while it is available. That includes examining and mapping the train and the scene, and speaking with people who witnessed the accident or were involved.”
Investigators will examine the locomotive, rolling stock and rail infrastructure in detail.
They will also secure operational data and maintenance records and interview the train crew and other KiwiRail employees.
Evidence gathering and analysis will continue after investigators leave the site, with the inquiry examining the cause of the derailment and any wider safety issues.
TAIC says the purpose of its investigations is to identify lessons that could prevent similar incidents rather than assign blame or determine liability.
